US 11,754,788 B2
Multi-channel mode converters with silicon lenses
Rongsheng Miao, San Jose, CA (US); Xueyan Zheng, Dublin, CA (US); Xiao Andy Shen, San Bruno, CA (US); and Yu Sheng Bai, Los Altos Hills, CA (US)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Feb. 24, 2021, as Appl. No. 17/183,828.
Application 17/183,828 is a continuation of application No. PCT/CN2019/091406, filed on Jun. 14, 2019.
Claims priority of provisional application 62/784,928, filed on Dec. 26, 2018.
Prior Publication US 2021/0181423 A1, Jun. 17, 2021
Int. Cl. G02B 6/32 (2006.01)
CPC G02B 6/32 (2013.01) 20 Claims
OG exemplary drawing
 
1. A multi-channel mode converter comprising:
a lens array formed from a composition comprising silicon, the lens array comprising:
a first lens etched from the lens array and being formed from a composition comprising silicon, and
a second lens etched from the lens array and being formed from a composition comprising silicon;
a glass block bonded to the lens array, wherein widths of the lens array and the glass block are substantially the same, and wherein heights of the lens array and the glass block are substantially the same; and
a fiber assembly unit (FAU) array coupled to the glass block and comprising:
a first fiber coupled to the first lens through the glass block and configured to carry a first optical signal between the first fiber and the first lens, and
a second fiber coupled to the second lens through the glass block and configured to carry a second optical signal between the second fiber and the second lens,
wherein the first lens and the second lens have magnifications configured to match a pitch tolerance of the FAU array to a waveguide pitch tolerance.